From 936dba67ff3d9103b82f9c5dec527024f3ec90c4 Mon Sep 17 00:00:00 2001
From: Eric Kooistra <kooistra@astron.nl>
Date: Mon, 15 May 2023 09:59:10 +0200
Subject: [PATCH] Add comment about sim_ddr size.

---
 libraries/io/ddr/tb/vhdl/tb_io_ddr.vhd | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libraries/io/ddr/tb/vhdl/tb_io_ddr.vhd b/libraries/io/ddr/tb/vhdl/tb_io_ddr.vhd
index 5c217994f0..1576dda24f 100644
--- a/libraries/io/ddr/tb/vhdl/tb_io_ddr.vhd
+++ b/libraries/io/ddr/tb/vhdl/tb_io_ddr.vhd
@@ -69,7 +69,9 @@ ARCHITECTURE str of tb_io_ddr IS
 
   -- Select DDR3 or DDR4 dependent on the technology and sim model
   CONSTANT c_mem_ddr                  : t_c_tech_ddr := func_tech_sel_ddr(g_technology, g_tech_ddr3, g_tech_ddr4);
-  CONSTANT c_sim_ddr                  : t_c_tech_ddr := func_tech_sel_ddr(g_technology, c_tech_ddr3_sim_16k, c_tech_ddr4_sim_4k);
+
+  -- Need to use >= c_tech_ddr4_sim_16k for g_block_len = 2500 in tb_tb_io_ddr
+  CONSTANT c_sim_ddr                  : t_c_tech_ddr := func_tech_sel_ddr(g_technology, c_tech_ddr3_sim_16k, c_tech_ddr4_sim_16k);
   CONSTANT c_tech_ddr                 : t_c_tech_ddr := func_tech_sel_ddr(g_sim_model, c_sim_ddr, c_mem_ddr);
   
   CONSTANT c_exp_gigabytes            : INTEGER := func_tech_ddr_module_gigabytes(c_tech_ddr);
-- 
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